ATRATIVO DO CRAVO-DE-DEFUNTO NA POPULAÇÃO DE PRAGAS E INIMIGOS NATURAIS NA CULTURA DA ALFACE

• DOI: 10.22533/at.ed.50419090711

• Palavras-chave: Lactuca sativa L., Tagetes patula L., controle biológico, conservação

• Keywords: Lactuca sativa L., Tagetes patula L., biological control, conservation

• Abstract:

  The lettuce is one of the most

  popular and most consumed hardwood

  vegetables in Brazil, highlighting its relevance in

  the social and economic sphere. However, one

  of the factors limiting the development of this vegetable is the pest attack, where the

  main method of control is the use of insecticides that can develop resistant populations

  of insects, besides offering social and environmental risks. Therefore, the objective

  of this work was to evaluate the attractive effect of the marigold as an alternative in

  the action of pest control by increasing the population of the natural enemies in the

  lettuce crop. The variety used was “Cinderella” curly lettuce, with a randomized block

  design with four replications and five treatments: Neem oil, lettuce + clove in islands,

  lettuce + cloves in strips, lettuce + red cloves and control. The evaluations were carried

  out weekly in three lettuce plants per treatment, counting the number of insects per

  plant. For the marigold (Tagetes patula), two plants were harvested per treatment. The

  faunal indexes and lettuce plants evaluated for quality, number of leaves and weight

  were calculated. The treatment of lettuce + marigold (central) presented the highest

  biodiversity (H = 2.1870, e = 0.8527) and was the least damaged by insects. The other

  variables did not present significant differences of this treatment. Marigold can be used

  for conservative biological control within Integrated Pest Management.

• Número de páginas: 15